1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.util.servlet;
24  
25  import com.liferay.portal.kernel.util.StringPool;
26  import com.liferay.portal.kernel.util.Validator;
27  import com.liferay.util.Encryptor;
28  import com.liferay.util.EncryptorException;
29  
30  import java.security.Key;
31  
32  import java.util.Collections;
33  import java.util.Enumeration;
34  import java.util.HashMap;
35  import java.util.Map;
36  
37  import javax.servlet.http.HttpServletRequest;
38  import javax.servlet.http.HttpServletRequestWrapper;
39  
40  /**
41   * <a href="EncryptedServletRequest.java.html"><b><i>View Source</i></b></a>
42   *
43   * @author Brian Wing Shun Chan
44   */
45  public class EncryptedServletRequest extends HttpServletRequestWrapper {
46  
47      public EncryptedServletRequest(HttpServletRequest request, Key key) {
48          super(request);
49  
50          _params = new HashMap<String, String[]>();
51          _key = key;
52  
53          Enumeration<String> enu = getParameterNames();
54  
55          while (enu.hasMoreElements()) {
56              String name = enu.nextElement();
57              String[] values = super.getParameterValues(name);
58  
59              for (int i = 0; i < values.length; i++) {
60                  if (Validator.isNotNull(values[i])) {
61                      try {
62                          values[i] = Encryptor.decrypt(_key, values[i]);
63                      }
64                      catch (EncryptorException ee) {
65                          values[i] = StringPool.BLANK;
66                      }
67                  }
68              }
69  
70              _params.put(name, values);
71          }
72      }
73  
74      public String getParameter(String name) {
75          String[] values = _params.get(name);
76  
77          if ((values != null) && (values.length > 0)) {
78              return values[0];
79          }
80          else {
81              return null;
82          }
83      }
84  
85      public Map<String, String[]> getParameterMap() {
86          return Collections.unmodifiableMap(_params);
87      }
88  
89      public String[] getParameterValues(String name) {
90          return _params.get(name);
91      }
92  
93      private Map<String, String[]> _params;
94      private Key _key;
95  
96  }